Hydrogen H2

Physical Constants of Gas
Molecular Weight………………………………. 2.016
Specific Volume……….. 191.3 CF/lb. (11.9 m3/kg)
Boiling Point……………. . -423°F (-252.8°C) 1 atm
Gas Density 70°F 1 atm……………… 0.085 kg/m3

Shipping Data
Shipping Class…………………………………….. 70
DOT/TC Name………….. Hydrogen, Compressed
DOT/TC Class………………. 2.1 (Flammable Gas)
WHMIS Class……………………………………. AB1
DOT Label………………………….. Flammable Gas
CAS Registry No………………………… 1333-74-0
UN No./IATA No……………………………. UN1049

Safety Information
Flammable high-pressure gas.
Flammability limits: lower 4%; upper 75%.
Can form explosive mixture with air.
May ignite if valve is open to air.
Burns with an invisible flame.

Hydrogen is a carrier and/or burning gas on gaseous chromatography. It also used as reducer gas on metallurgical and ceramic processes, mixtures for weld, in metal treatment and vegetable fats hydrogenation (margarine). It functions as main component on chemical products, especially ammonia (NH3) and methanol (CH3OH). It is used in large quantities on refineries for gasoline and lubricants production, fertilizers industry and on the process of glass manufacture.